Sunji-posv-net/pos/POSV.Payment/Abmcs/DLLMsdi.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;

namespace POSV.Payment.Abmcs
{
    public delegate int Abmcs(string strIn, StringBuilder strOut);

    public class DLLMsdi
    {
        [DllImport("kernel32.dll")]
        private extern static IntPtr LoadLibrary(string path);
        [DllImport("kernel32.dll")]
        private extern static IntPtr GetProcAddress(IntPtr lib, string funcName);
        [DllImport("kernel32.dll")]
        private extern static bool FreeLibrary(IntPtr lib);

        private IntPtr hLib;
        public DLLMsdi(String DLLPath)
        {
            hLib = LoadLibrary(DLLPath);
        }
        public void UnLoad()
        {
            FreeLibrary(hLib);
        }
        //将要执行的函数转换为委托
        public Delegate Invoke(string APIName, Type t)
        {
            IntPtr api = GetProcAddress(hLib, APIName);
            return (Delegate)Marshal.GetDelegateForFunctionPointer(api, t);
        }
    }

}